1354972657 has 2 divisors, whose sum is σ = 1354972658. Its totient is φ = 1354972656.

The previous prime is 1354972651. The next prime is 1354972667. The reversal of 1354972657 is 7562794531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 718722481 + 636250176 = 26809^2 + 25224^2 .

It is an emirp because it is prime and its reverse (7562794531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1354972657 - 2³ = 1354972649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1354972657.

It is not a weakly prime, because it can be changed into another prime (1354972651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677486328 + 677486329.

It is an arithmetic number, because the mean of its divisors is an integer number (677486329).

Almost surely, 2^1354972657 is an apocalyptic number.

It is an amenable number.

1354972657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354972657 is an equidigital number, since it uses as much as digits as its factorization.

1354972657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 49.

The square root of 1354972657 is about 36809.9532327875. The cubic root of 1354972657 is about 1106.5647812990.

The spelling of 1354972657 in words is "one billion, three hundred fifty-four million, nine hundred seventy-two thousand, six hundred fifty-seven".